Device for adjusting moisture content of finished sand

Abstract

The utility model discloses a finished sand moisture content adjusting device which comprises a dry sand belt weighing feeder, a mixing drum, a water metering system and a wet sand belt conveyor, the dry sand belt weighing feeder is connected with a discharging hopper, the lower end of the discharging hopper is communicated with a discharging pipe, a water outlet pipe is arranged on the discharging pipe, the right end of the discharging pipe and the right end of the water outlet pipe extend into the mixing drum, and the water metering system is connected with the wet sand belt conveyor. The right end of the discharging pipe is communicated with a flow dividing pipe, the upper end and the lower end of the flow dividing pipe are communicated with branch pipes, the right side face of the flow dividing pipe is provided with a first water spraying nozzle, the two branch pipes are provided with second water spraying nozzles, and the wet sand belt conveyor is located outside the right side of the stirring barrel, connected with the stirring barrel in a bearing mode and provided with a microwave moisture meter. The water outlet pipe is communicated with the water storage container, an electromagnetic valve is installed on the water outlet pipe, the microwave moisture meter, the dry sand belt weighing feeder and the water flow meter are all electrically connected with a controller, and the controller is in control connection with the electromagnetic valve. Compared with the prior art, the mixing efficiency of water and dry sand is high, and the labor cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to dry sand humidification field, especially in a finished sand moisture content adjusting device. BACKGROUND

[0002] Because the moisture content in dry sand is low and contains a certain proportion of stone powder, dust is easy to produce and pollute the environment during the conveying process, and different particle size particles are easy to separate and produce segregation phenomenon, so the quality of finished sand is produced, so it is necessary to carry out humidification treatment on dry sand through the finished sand humidification device, such as application number 2013205696636, a kind of humidification stirring device, it includes bottom disc and the stirring drum in the bottom disc upper portion, the both ends of stirring drum are respectively equipped with feeding device and discharging device, its characterized in that, stirring drum both ends are fixed with rolling ring, the lower part of rolling ring has two groups of symmetrical support wheel props, one group of support wheel is connected with speed reducer to become driving wheel through universal coupling, stirring drum inner wall is also equipped with evenly spaced material lifting plate;In the end of stirring drum connection feeding device, there is also a water spraying pipe with spray head;When application, through water spraying pipe, finished sand has a certain moisture content, to ensure the quality of finished sand in storage and transportation process.

[0003] But the spray head of the above-mentioned humidification device is in the feeding end, and the sand material is easy to hit the spray head when entering from the feeding end, so that the spray head is easy to be blocked, and only water is added from the feeding end, so that water and sand material cannot be mixed quickly, and the mixing efficiency is low;Moreover, the wet sand after humidification still needs to manually take finished sand sample to the specified place to detect moisture content, when the moisture content detected does not meet the preset moisture content, the water amount needs to be manually adjusted according to the moisture content, and the labor cost is high.

[0004] Therefore, the present inventors have conducted in-depth research on the problem, and thus the present application is produced. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of finished sand moisture content adjusting device to solve the problems of low mixing efficiency and high labor cost of existing humidification device.

[0006] In order to achieve the purpose, the utility model adopts the following technical scheme:

[0007] The application relates to a finished sand moisture content adjusting device which comprises a frame, a stirring drum horizontally and rotatably arranged on the frame, wherein the stirring drum is arranged in a downward inclination, the horizontal direction of the stirring drum is the left-right direction, the left end of the stirring drum is higher than the right end of the stirring drum, the left end of the stirring drum is provided with a feeding port, the right end of the stirring drum is provided with a discharging port, and a water spraying device is arranged in the stirring drum; the device further comprises a dry sand belt weighing feeder, a water metering system and a wet sand belt conveyor provided with a conveying belt, wherein the dry sand belt weighing feeder is arranged outside the left side of the stirring drum and is arranged in an upward inclination, the right end of the dry sand belt weighing feeder is provided with a lower hopper, the lower end of the lower hopper is communicated with a lower discharging pipe which is inclined to the left and downward, the inner bottom surface of the lower discharging pipe is provided with a water outlet pipe which is inclined to the left and downward along the lower discharging pipe, the right end of the lower discharging pipe and the right end of the water outlet pipe jointly extend into the stirring drum, the right end of the lower discharging pipe is communicated with a shunt pipe which is arranged in the stirring drum and is arranged vertically, the upper and lower ends of the shunt pipe are respectively communicated with branch pipes which extend along the horizontal direction of the stirring drum, the right side of the shunt pipe is provided with a plurality of first water spraying nozzles which are arranged in an upper and lower interval, one side of the two branch pipes which faces the center of the stirring drum is provided with a plurality of second water spraying nozzles which are arranged in a left and right interval, and the branch pipes, the shunt pipe, the first water spraying nozzles, the second water spraying nozzles and the water outlet pipe constitute the water spraying device; the wet sand belt conveyor is arranged outside the right side of the stirring drum and is arranged in an upward inclination, the input end of the wet sand belt conveyor is connected with the discharging port, and the wet sand belt conveyor is provided with a microwave moisture meter which is arranged below the conveying belt, the detection end of the microwave moisture meter is arranged upward and is exposed outside the conveying belt, the water metering system is provided with a water storage container, a water flow meter which is used for measuring the water volume of the water storage container and a controller, the water outlet pipe is communicated with the water storage container through a water pump, the water outlet pipe is provided with an electromagnetic valve which is used for controlling the water volume of the water outlet pipe, the microwave moisture meter, the dry sand belt weighing feeder and the water flow meter are electrically connected with the input end of the controller, and the output end of the controller is connected with the electromagnetic valve.

[0008] The frame is connected with a left mounting cover and a right mounting cover which are sleeved on the left and right ends of the stirring drum, the left mounting cover is provided with a mounting port through which the lower discharging pipe extends into the stirring drum, the left side wall of the left mounting cover and the outer side wall of the lower discharging pipe are connected with a mounting piece which is sleeved on the outer side wall of the lower discharging pipe and is locked on the left mounting cover, the right end of the right mounting cover extends out of the frame, and the right end bottom surface of the right mounting cover is provided with a discharging port which is connected with the input end of the wet sand belt conveyor.

[0009] The mounting piece is provided with a reduced diameter section and an enlarged diameter section, the reduced diameter section and the enlarged diameter section are both arranged in a closed loop structure, the reduced diameter section is sleeved on the outer side wall of the lower discharging pipe and is locked together with the outer side wall of the lower discharging pipe, the enlarged diameter section is arranged on the right end of the reduced diameter section, and the left side of the left mounting cover is provided with a locking block which is flush with the right side of the enlarged diameter section, and the locking block is locked together with the enlarged diameter section.

[0010] The water outlet pipe has a water inlet part, a water passing part and a water outlet part, the water passing part is attached to the inner bottom of the discharging pipe, the water inlet part is vertically arranged at the upper end of the water passing part and extends out of the discharging pipe and is connected with the water metering system through the connecting pipe, the water outlet part is connected with the lower end of the water passing part and horizontally extends out of the right end of the discharging pipe, and the shunt pipe is connected with the water outlet part.

[0011] The right mounting cover is connected with a side branch pipe at a position between the two branch pipes, the side branch pipe is connected with the left side of the right mounting cover, and the side of the side branch pipe facing the branch pipes is provided with a third water outlet nozzle.

[0012] The water outlet pipe has a water inlet part, a water passing part and a water outlet part, the water passing part is attached to the inner bottom of the discharging pipe, the water inlet part is vertically arranged at the upper end of the water passing part and extends out of the discharging pipe and is connected with the water metering system through the connecting pipe, the water outlet part is connected with the lower end of the water passing part and horizontally extends out of the right end of the discharging pipe, and the shunt pipe is connected with the water outlet part. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The figure is a structural schematic diagram of the present application. DETAILED DESCRIPTION

[0014] In order to further explain the technical scheme of the present application, the following will be described in detail in combination with the drawings.

[0015] A finished sand moisture content adjusting device, when applied, puts the finished dry sand into the dry sand belt weighing feeder, the dry sand belt weighing feeder obtains the weight of the dry sand, the dry sand falls into the discharging hopper from the output end of the dry sand belt weighing feeder and enters the stirring drum through the discharging pipe, at the same time, the water metering system supplies water to the water outlet pipe, the water flow passes through the shunt pipe and the branch pipe and finally sprays into the stirring drum from the first water spraying nozzle on the shunt pipe and the second water spraying nozzle on the branch pipe, the dry sand and water are mixed and then fall from the discharge port of the stirring drum to the wet sand belt conveyor, the microwave moisture meter on the wet sand belt conveyor measures the actual wet sand moisture content and feeds back the actual wet sand moisture content to the controller, the controller compares the actual wet sand moisture content with the preset moisture content and controls the water metering system to adjust the water supply amount so as to control the actual wet sand moisture content to be consistent with the preset moisture content. Figure 1As shown, including rack 1, stirring drum 2, dry sand belt weighing feeder 3, water metering system 4 and wet sand belt conveyor 5 with conveying belt, stirring drum 2 is horizontally and rotatably installed on rack 1 and is downwardly inclined, the rotatable installation mode of stirring drum 2 is known to those skilled in the art, the horizontal direction of stirring drum 2 is left-right direction, the left end of stirring drum 2 is higher than the right end of stirring drum 2, the left end of stirring drum 2 has a feeding port, the stirring drum has a hollow structure with both ends open, the left open port of the stirring drum is the feeding port, the right end of stirring drum 2 has a discharging port, and water spraying device is arranged in stirring drum 2.

[0016] The improvement of the novel type lies in that the dry sand belt weighing feeder 3 is arranged outside the left side of the stirring drum 2 and is arranged in an upward inclination, the right end of the dry sand belt weighing feeder 3 is connected with a lower hopper 31, the lower end of the lower hopper 31 is communicated with a lower discharge pipe 311 which is inclined to the left and downward, a water outlet pipe 6 is installed on the inner bottom surface of the lower discharge pipe 311 and extends out of the lower discharge pipe 311 in a downward inclination, the right end of the lower discharge pipe 311 and the right end of the water outlet pipe 6 jointly extend into the stirring drum 2, the right end of the lower discharge pipe 311 is communicated with a shunt pipe 7 which is arranged in the stirring drum 2 and is arranged vertically, the upper and lower ends of the shunt pipe 7 are respectively communicated with branch pipes 8 which extend along the horizontal direction of the stirring drum 2, a plurality of first water spraying nozzles 71 are installed on the right side surface of the shunt pipe 7 and are arranged in an upper and lower interval, a plurality of second water spraying nozzles 81 are installed on the side of the branch pipes 8 which faces the center of the stirring drum 2 and are arranged in a left and right interval, the branch pipes 8, the shunt pipe 7, the first water spraying nozzles 71, the second water spraying nozzles 81 and the water outlet pipe 6 constitute the water spraying device, specifically, the frame 1 is connected with a left mounting cover 11 and a right mounting cover 12 which are sleeved on the left and right two end portions of the stirring drum 2, the left mounting cover 11 is provided with a mounting opening through which the lower discharge pipe 311 extends into the stirring drum 2, a mounting piece 111 is connected on the outer side wall of the lower discharge pipe 311 and the left side wall of the left mounting cover 11 and is sleeved on the outer side of the lower discharge pipe 311 and is locked on the left mounting cover 11, the mounting piece has a reduced diameter section and an expanded diameter section, both of which are in a closed loop structure, the reduced diameter section is sleeved on the outer side of the lower discharge pipe 311 and is locked together with the outer side wall of the lower discharge pipe 311, the expanded diameter section is located on the right end of the reduced diameter section, and the left side of the left mounting cover 11 is protruded to the left and is provided with a locking block which is flush with the right side surface of the expanded diameter section, the locking block is locked together with the expanded diameter section, the right end of the branch pipe 8 is connected with the right mounting cover 12, that is, a side branch pipe (not shown in the figure) is communicated with the left side of the right mounting cover 12 and is located between the two branch pipes 8, the side of the side branch pipe which faces the branch pipe 8 is provided with a third water outlet nozzle; the specific mode that the dry sand belt weighing feeder conveys dry sand and obtains the weight of the dry sand is a known technology in the art, which is not described herein.In use, water is supplied through the water supply pipe 6, flows through the water outlet pipe 6 and the shunt pipe 7, is shunted from the shunt pipe 7 to the two branch pipes 8, is transported from the branch pipes to the side branch pipes, and is finally sprayed from the first water spray nozzles 71 on the shunt pipe 7, the second water spray nozzles 81 on the branch pipes 8, and the third water spray nozzles on the side branch pipes. The first water spray nozzles 71, the second water spray nozzles 81, and the third water spray nozzles continuously spray water in the length direction of the stirring drum, and the upper and lower ends have the branch pipes 8 and the second water spray nozzles 81, so that the dry sand can be quickly mixed with water when the sand moves in the length direction of the stirring drum, thereby improving the mixing efficiency. Moreover, the first water spray nozzles 71, the second water spray nozzles 81, and the third water spray nozzles spray water towards the center of the stirring drum 2, so that the sand and gravel are less likely to hit the outlets of the first water spray nozzles 71, the second water spray nozzles 81, and the third water spray nozzles when falling, and the use of the first water spray nozzles 71, the second water spray nozzles 81, and the third water spray nozzles is not affected.

[0017] The water metering system 4 has a water storage container, a water flow meter for measuring the water volume of the water storage container, and a controller. The water outlet pipe 6 is connected to the water storage container through a water pump, and an electromagnetic valve for controlling the water volume of the water outlet pipe 6 is installed on the water outlet pipe 6. Specifically, the water outlet pipe 6 has a water inlet portion 61, a water passing portion 62, and a water outlet portion 63. The water passing portion 62 is attached to the inner bottom of the discharging pipe 311. The water inlet portion 61 is vertically arranged at the upper end of the water passing portion 62 and extends out of the discharging pipe 311 to be connected to the water metering system 4 through a communication pipe 611. The water outlet portion 63 is connected to the lower end of the water passing portion 62 and extends out of the right end of the discharging pipe 311. The water outlet portion 63 is consistent with the extension direction of the stirring drum 2. The shunt pipe 7 is connected to the right end of the water outlet portion 63.

[0018] The wet sand belt conveyor 5 is arranged on the right side of the stirring drum 2 and is upwardly inclined, the input end of the wet sand belt conveyor 5 is connected with the discharge port, i.e. the right end of the right mounting cover 12 extends out of the frame 1, the lower end of the right end of the right mounting cover 12 is provided with a discharge port connected with the input end of the wet sand belt conveyor 5, the discharge port is the discharge port mentioned above, and the wet sand belt conveyor 5 is provided with a microwave moisture meter below the conveying belt, the detection end of the microwave moisture meter is arranged upwardly and is exposed outside the conveying belt, the microwave moisture meter, the dry sand belt weighing feeder 3 and the water flow meter are electrically connected with the input end of the controller, and the output end of the controller is connected with the electromagnetic valve; the water metering system realizes the quantitative control of the water quantity entering the stirring drum 2 through the water metering meter, the water pump, the electromagnetic valve and the controller, the microwave moisture meter measures the water content of the wet sand on the dry sand belt weighing feeder 3, the measured water content is fed back to the controller, and the water metering system adjusts the water supply quantity according to the water content so that the actual water content of the wet sand and the preset water content tend to be consistent, which is the known technology for the person skilled in the art and will not be described in detail here; in application, the dry sand and water are mixed into wet sand in the stirring drum 2 and then fall from the discharge port to the wet sand belt conveyor 5, the wet sand conveyed on the wet sand belt conveyor 5 is measured by the microwave moisture meter, the water content is fed back to the controller and compared with the preset water content, the controller controls the water metering system to adjust the water supply quantity, so that the actual water content of the wet sand and the preset water content tend to be consistent.

[0019] The finished sand moisture content adjusting device of the novel type, when applied, puts the finished dry sand into the dry sand belt weighing feeder 3, the dry sand belt weighing feeder 3 obtains the weight of the dry sand, the dry sand falls into the lower hopper 31 from the output end of the dry sand belt weighing feeder 3, enters the mixing drum 2 through the lower discharge pipe 311, at the same time, the water metering system supplies water through the water supply pipe 6, the water flow passes through the shunt pipe 7 and the branch pipe 8, and finally is sprayed into the mixing drum 2 from the first water spraying nozzle 71 on the shunt pipe 7 and the second water spraying nozzle 81 on the branch pipe 8, the dry sand is mixed with water, falls from the discharge port of the mixing drum 2 to the wet sand belt conveyor 5, the microwave moisture meter on the wet sand belt conveyor 5 measures the actual wet sand moisture content, and feeds back the actual wet sand moisture content to the controller, the controller compares the actual wet sand moisture content with the preset moisture content and controls the water metering system to adjust the water supply amount, so that the actual wet sand moisture content and the preset moisture content tend to be consistent, compared with the prior art, the water flow can be dispersed in a larger range in the mixing drum through the branch pipe 8, the shunt pipe 7, the first water spraying nozzle 71, the second water spraying nozzle 81 and the water outlet pipe 6, the mixing efficiency of water and dry sand is improved, at the same time, the first water spraying nozzle 71 and the second water spraying nozzle 81 are both directed to the center of the mixing drum 2, when the sandstone falls, the output port of the first water spraying nozzle 71 and the second water spraying nozzle 81 is not easy to be blocked, and the actual moisture content can be automatically and real-timely fed back and adjusted, manual measurement of the moisture content is not needed, the degree of automation is high, and the labor cost is reduced.

[0020] The product form of the utility model is not limited to the case of the drawings and the embodiments, and any appropriate changes or modifications of the similar ideas by anyone shall be considered as not departing from the patent category of the utility model.

Claims

1. A finished sand moisture content adjusting device, comprising a frame and a stirring drum horizontally rotatably mounted on the frame, the stirring drum being arranged in a downward inclination, the horizontal direction of the stirring drum being left-right direction, the left end of the stirring drum being higher than the right end of the stirring drum, the left end of the stirring drum being provided with a feeding port, the right end of the stirring drum being provided with a discharging port, and a water spraying device being arranged in the stirring drum; characterized in that: The dry sand belt weighing feeder is arranged outside the left side of the stirring drum and is arranged in an upwardly inclined manner, the lower hopper is connected to the right end of the dry sand belt weighing feeder, the lower end of the lower hopper is communicated with the downwardly leftwardly inclined lower discharging pipe, the inner bottom surface of the lower discharging pipe is provided with the water outlet pipe which extends downwardly along the lower discharging pipe, the right end of the lower discharging pipe and the right end of the water outlet pipe jointly extend into the stirring drum, the right end of the lower discharging pipe is communicated with the shunt pipe which is arranged in the stirring drum and is arranged in a vertical manner, the upper end and the lower end of the shunt pipe are respectively communicated with the branch pipes which extend along the horizontal direction of the stirring drum, the right side surface of the shunt pipe is provided with the first water spraying nozzles which are arranged in an upper-lower interval manner, the side surface of the two branch pipes which faces the center of the stirring drum is provided with the second water spraying nozzles which are arranged in a left-right interval manner, the branch pipes, the shunt pipe, the first water spraying nozzles, the second water spraying nozzles and the water outlet pipe constitute the water spraying device, the wet sand belt conveyor is arranged outside the right side of the stirring drum and is arranged in an upwardly inclined manner, the input end of the wet sand belt conveyor is connected to the discharge opening, and the microwave moisture meter is arranged below the conveying belt of the wet sand belt conveyor, the detection end of the microwave moisture meter is arranged in an upwardly exposed manner and is exposed outside the conveying belt, the water metering system comprises a water storage container, a water flow meter for measuring the water volume of the water storage container and a controller, the water outlet pipe is communicated with the water storage container through the water pump, the water outlet pipe is provided with the electromagnetic valve for controlling the water volume of the water outlet pipe, the microwave moisture meter, the dry sand belt weighing feeder and the water flow meter are electrically connected to the input end of the controller, and the output end of the controller is connected to the electromagnetic valve. ​ 2. A finished sand moisture content adjustment device as defined in claim 1, wherein: The left mounting cover and the right mounting cover are arranged on the frame and are sleeved on the left end and the right end of the stirring drum, the mounting hole is arranged on the left mounting cover and is communicated with the lower discharging pipe, the mounting member is arranged on the left side wall of the left mounting cover and the outer side wall of the lower discharging pipe and is locked on the outer side wall of the lower discharging pipe and the left side wall of the left mounting cover, the right end of the right mounting cover is arranged outside the frame, the discharge opening is arranged on the right end bottom surface of the right mounting cover and is connected to the input end of the wet sand belt conveyor, and the discharge opening is the discharge opening.

3. A finished sand moisture content adjustment device as defined in claim 2, wherein: The mounting member comprises the reduced diameter section and the enlarged diameter section, the reduced diameter section and the enlarged diameter section are arranged in a closed loop structure, the reduced diameter section is sleeved on the outer side wall of the lower discharging pipe and is locked on the outer side wall of the lower discharging pipe, the enlarged diameter section is arranged on the right end of the reduced diameter section, and the left side of the left mounting cover is provided with the locking block which is arranged in a leftwardly protruding manner and is arranged in a flat manner on the right side surface of the enlarged diameter section, and the locking block is locked on the right side surface of the enlarged diameter section.

4. The finished sand moisture content adjustment device of claim 2, wherein: The water outlet pipe comprises the water inlet portion, the water passing portion and the water outlet portion, the water passing portion is arranged in a flat manner on the inner bottom of the lower discharging pipe, the water inlet portion is arranged in a vertical manner on the upper end of the water passing portion and is arranged outside the lower discharging pipe and is communicated with the water metering system through the communication pipe, the water outlet portion is connected to the lower end of the water passing portion and is arranged outside the right end of the lower discharging pipe, and the shunt pipe is communicated with the water outlet portion.

5. The finished sand moisture content adjustment device of claim 2, wherein: The side branch pipe is arranged on the right mounting cover and is arranged between the two branch pipes, the side branch pipe is connected to the left side surface of the right mounting cover, and the third water outlet nozzle is arranged on the side of the side branch pipe which faces the branch pipe.

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